Multiple computer system and method for assigning logical computers on the same system
AssigneeHitachi, Ltd.
InventorYoshifumi Takamoto
Life of this patent
Estimating the term…
Abstract
High reliability is achieved against hardware failures by use of logical computers. In plural logical computers using computers comprising plural physical processors, in cases where a highly reliable system is built using the plural logical computers, the logical computers are assigned to different physical processors. During failure recovery, reduction in service is prevented by increasing processor amounts of other active logical computers of the highly reliable system.
Claims10
A multiple computer system comprising:
- plural physical processors;
- and
- logical computers of which one or more are set to each of said plural physical computers,
- wherein a cluster system or hot standby is built using said plural logical computers which are set dispersedly to the different physical processors.
A method of assigning logical computers in a computer system having plural physical processors to which one or more logical computers can be set, the method including the steps of:
- deciding a processor assignment amount per logical computer;
- finding said physical processors having empty processor amounts;
- setting logical computers to said found processors;
- finding physical processors having empty processor amounts which are different from said physical processors found previously;
- and
- setting logical computers to said found physical processors.
A program for assigning logical computers, to assign logical computers in a computer system having plural physical processors to which one or more logical computers can be set, designed to function as:
- means for deciding a processor assignment amount per logical computer;
- means for finding said physical processors having empty processor amounts, and setting logical computers to said found processors;
- and
- means for finding physical processors having empty processor amounts which are different from said physical processors found previously, and setting logical computers to said found physical processors.
A program for assigning logical computers, to assign logical computers in a computer system having plural physical processors to which one or more logical computers can be set, designed to function as:
- first means for deciding a processor assignment amount for each of logical computers constituting a cluster system;
- second means for finding said physical processors having empty processor amounts, and setting logical computers constituting the cluster system to said found processors;
- and
- third means for finding physical processors having empty processor amounts which are different from said physical processors found previously, and setting other logical computers constituting the cluster system to said found physical processor.
Dependencies are inferred from the claim text.